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Point O is the centre of the circle. What is the value of x? (Assume that lines that appear to be tangent are tangent)
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Point O is the centre of the circle. What is the value of x? (Assume that lines that appear to be tangent are tangent)

Point O is the centre of the circle. What is the value of x? (Assume that lines that-example-1
User Jgetner
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Sum if the inner angles of the quadrilateral:
150° + 90° + 90° + x = 360°
330° + x = 360°
x = 360° - 330°
x = 30 °
User Bibhav
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